CVE-2026-46180wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task
- 7.8HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task Watchdog task might end between send_sig() and kthread_stop() calls, what results in the use-after-free issue. Fix this by increasing watchdog task reference count before calling send_sig() and dropping it by switching to kthread_stop_put().
Timeline
ID reserved
By Linux
- 15 days later
· 15 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 – < a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a
- affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 – < df2e90d6a9955510f24f1dada78cfc439fd9fa88
- affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 – < d616bb10de79e5c2bd8a24230a1128aeaf715615
- affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 – < ed4168d1a50fef5be8eca947fbbf05a28507d265
- affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 – < d16827cb1d3936f7627d0da6044483f743ebde03
- affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 – < 658d2e46c2e9a8eb9b80c5e803ce3c89885b3366
- affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 – < 908b92231e1ded53e43fcfad5e0704d83e1b803c
- affected a9ffda88be7416b8336f644806c2b3ed3ce08b26 – < c623b63580880cc742255eaed3d79804c1b91143
- affected 3.3
- unaffected < 3.3
- unaffected 5.10.259 – ≤ 5.10.*
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.176 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.88 – ≤ 6.12.*
- unaffected 6.18.30 – ≤ 6.18.*
- unaffected 7.0.7 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References9
- https://git.kernel.org/stable/c/a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a (opens in a new tab)
- https://git.kernel.org/stable/c/df2e90d6a9955510f24f1dada78cfc439fd9fa88 (opens in a new tab)
- https://git.kernel.org/stable/c/d616bb10de79e5c2bd8a24230a1128aeaf715615 (opens in a new tab)
- https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265 (opens in a new tab)
- https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03 (opens in a new tab)
- https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366 (opens in a new tab)
- https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c (opens in a new tab)
- https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32807 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46180)Record last updated .